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针对BOC调制信号传统捕获算法的模糊问题,在对直接捕获法、BPSK-Like法以及ASPeCT法分析的基础上,确定了ASPeCT法作为信号接收机捕获模块的设计方案。然后设计了基于BOC调制信号的跟踪环路,在对载波环和码环分析的基础上,确定了锁频环辅助锁相环作为环路中载波环的设计方案,以及修正后的EMLP鉴相器为环路中码环的设计方案。最后,对基于ASPeCT法捕获及基于锁频环辅助锁相环、ASPeCT修正码环的信号跟踪进行了实验仿真,验证了捕获模块和跟踪环路方案的有效性。
Aimed at the fuzzy problem of the traditional BOC modulation signal acquisition algorithm, the design scheme of ASPeCT as the signal receiver acquisition module was established based on the analysis of direct acquisition, BPSK-Like and ASPeCT. Then, a tracking loop based on BOC modulation signal is designed. Based on the analysis of carrier ring and code ring, the design scheme of the lock-ring auxiliary PLL as the carrier ring in the loop is determined, and the modified EMLP phase discrimination The device is the code ring in the loop design. Finally, the signal acquisition based on ASPeCT method and the lock loop-based Auxiliary PLL and ASPeCT correction code loop are simulated experimentally to verify the effectiveness of the acquisition module and the tracking loop scheme.